Excerpts from Demonstration of the Truth (Borhân-ol Haqq):

Chapter 1

[5] Throughout history, human beings have always felt the necessity to establish laws based upon the requirements of their inherent nature and particular time. Laws concerning mankind’s material life are aimed at maintaining order and peace in society, while laws concerning their spiritual life focus on enabling human beings to access self-knowledge and knowledge of the metaphysical world. From the time human beings first appeared [on earth], messengers called prophets have appeared on God’s behalf in each era to promulgate divine precepts adapted to the mentality and intellect of their contemporaries. The sum of these precepts is referred to as "celestial books" [sacred scriptures].

These laws each have two distinct aspects:

1. The exoteric aspect [corresponding to the ritual stage] is the foundation upon which material life is organized. This aspect allows for the establishment of peace and order in society, as well as the moral education of the collective whole.
2. The esoteric aspect, which corresponds to the stage of gnosis, involves the spiritual dimension and metaphysical world [...].

Chapter 2

[13] All interactions between persons and things can be conceived of in terms of one who entrusts and one who is entrusted with (the trustor and the trustee). The existence of beings, for example, is something the Necessary Being (the trustor) has entrusted the world of possibilities with (the trustee). Similarly, life, maturity, willpower, reason, dignity, knowledge, rank, virtue, and piety are all things God has entrusted human beings with; failure to accomplish one’s duty with regards to any of them amounts to betraying that trust. To neglect one’s health, therefore, is to betray life; to be capricious is to betray maturity; to be indecisive is to betray willpower; to act impulsively is to betray reason; to act basely is to betray dignity; to remain ignorant is to betray knowledge; to abuse power is to betray rank; to succumb to debauchery is to betray virtue; to be impious is to betray piety …

Chapter 5

[23-24] According to its founder, the Ahl-e Haqq faith rests on four pillars: purity, rectitude, self-effacement, and altruism.

1. Purity ... is very broad in scope and is applicable to anything that is susceptible of purity. The Ahl-e Haqq, therefore, should be pure both in their material life and in their spiritual life. One’s body, clothes, home, source of income and food, as well as one’s thoughts, words, behavior, and actions, should be completely clean, licit, and sincere.
2. Rectitude is following the straight path, which means to accomplish what God has prescribed and to avoid what He has proscribed. In other words, the straight path is to serve God and to avoid lies and sins….
3. Self-effacement means to purify oneself of pride, presumption, complacency, egoism, excessive desires and impulses, and licentiousness; in short, to purify oneself of all moral vices. Self-effacement is to be totally submitted to destiny and to seek nothing but God’s satisfaction – meaning to become liberated and annihilated in God. According to the gnostics and mystics, only when we have completed the stage of contentedness can we reach total submission, which is the ultimate stage of gnosis.
4. Altruism [in a general sense] is to serve and help all beings, to devote ourselves without any expectations such that we "bear the load in order to relieve others." [Ostad Elahi elaborates on a more specific meaning of this fourth pillar—that is, a viator must reach a level where the divine will is manifest through him].